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Michael Sevakis d37bf24d90 Enable setting of global output samplerate on certain targets.
Replaces the NATIVE_FREQUENCY constant with a configurable frequency.

The user may select 48000Hz if the hardware supports it. The default is
still 44100Hz and the minimum is 44100Hz. The setting is located in the
playback settings, under "Frequency".

"Frequency" was duplicated in english.lang for now to avoid having to
fix every .lang file for the moment and throwing everything out of sync
because of the new play_frequency feature in features.txt. The next
cleanup should combine it with the one included for recording and
generalize the ID label.

If the hardware doesn't support 48000Hz, no setting will be available.

On particular hardware where very high rates are practical and desireable,
the upper bound can be extended by patching.

The PCM mixer can be configured to play at the full hardware frequency
range. The DSP core can configure to the hardware minimum up to the
maximum playback setting (some buffers must be reserved according to
the maximum rate).

If only 44100Hz is supported or possible on a given target for playback,
using the DSP and mixer at other samperates is possible if the hardware
offers them.

Change-Id: I6023cf0c0baa8bc6292b6919b4dd3618a6a25622
Reviewed-on: http://gerrit.rockbox.org/479
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested-by: Michael Sevakis <jethead71@rockbox.org>
2013-07-06 04:22:04 +02:00
android android: Rewrite PCM playback without OnPlaybackPositionUpdateListener. 2013-04-01 11:26:12 +02:00
apps Enable setting of global output samplerate on certain targets. 2013-07-06 04:22:04 +02:00
backdrops cabbiev2 for rk27xx generic design target 2012-07-09 20:30:43 +02:00
bootloader sansa connect bootloader: fix red 2013-06-27 14:04:32 +02:00
debian Prepare new maemo release 2013-03-10 12:12:38 +01:00
docs Update instructions in docs/README to change 'Check out from SVN' to 'Clone from git' 2013-04-24 11:11:38 +01:00
firmware Enable setting of global output samplerate on certain targets. 2013-07-06 04:22:04 +02:00
flash Make fixepoint.c as a shared library (libfixedpoint.a). 2013-04-26 00:11:04 +02:00
fonts Remove superfluous executable bits on a bunch of files. 2011-06-08 14:22:03 +00:00
gdb Generate C file / header for svn version string 2010-05-27 09:41:46 +00:00
icons wpsbuild: Rewrite to fix various issues and support .fms 2012-06-10 21:20:36 +02:00
lib Enable setting of global output samplerate on certain targets. 2013-07-06 04:22:04 +02:00
manual Manual: fix minor error with D2 OF filenames 2013-04-20 14:41:12 +01:00
packaging Prepare unofficial pandora release 2013-03-10 14:09:30 +01:00
rbutil mkimxboot: add zen style 100/300 firmware to the list 2013-06-18 15:02:01 +02:00
tools Fix building of sh, arm and m68k toolchains with new texinfo 2013-06-15 21:01:26 +02:00
uisimulator Keep fixing 0c7b787 stuff 2013-04-15 14:00:48 -04:00
utils imx233: document some more stmp vendor scsi command 2013-07-03 01:05:00 +02:00
wps fix typo 2012-12-04 18:49:29 +11:00
.gitattributes Add a gitattributes file for the migration. 2011-12-01 14:14:59 +00:00
.gitignore Add *.o and *.a to .gitignore 2012-05-16 11:26:22 +02:00

               __________               __   ___.
     Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
     Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
     Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
     Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
                       \/            \/     \/    \/            \/

Build Your Own Rockbox

1. Clone 'rockbox' from git (or extract a downloaded archive).

   $ git clone git://git.rockbox.org/rockbox

     or

   $ tar xjf rockbox.tar.bz2

2. Create a build directory, preferably in the same directory as the firmware/
   and apps/ directories. This is where all generated files will be written.

   $ cd rockbox
   $ mkdir build
   $ cd build

3. Make sure you have sh/arm/m68k-elf-gcc and siblings in the PATH. Make sure
   that you have 'perl' in your PATH too. Your gcc cross compiler needs to be
   a particular version depending on what player you are compiling for. These
   can be acquired with the rockboxdev.sh script in the /tools/ folder of the
   source, or will have been included if you've installed one of the
   toolchains or development environments provided at http://www.rockbox.org/

   $ which sh-elf-gcc
   $ which perl

4. In your build directory, run the 'tools/configure' script and enter what
   target you want to build for and if you want a debug version or not (and a
   few more questions). It'll prompt you. The debug version is for making a
   gdb version out of it. It is only useful if you run gdb towards your target
   Archos.

   $ ../tools/configure

5. *ploink*. Now you have got a Makefile generated for you.

6. Run 'make' and soon the necessary pieces from the firmware and the apps
   directories have been compiled, linked and scrambled for you.

   $ make
   $ make zip

7. unzip the rockbox.zip on your music player, reboot it and
   *smile*.

If you want to build for more than one target, just create several build
directories and create a setup for each target:

   $ mkdir build-fmrecorder
   $ cd build-fmrecorder
   $ ../tools/configure

   $ mkdir build-player
   $ cd build-player
   $ ../tools/configure

Questions anyone? Ask on the mailing list. We'll be happy to help you!